Paper machinery



Aug. 25, 1959 R. w. PHELPS PAPER MACHINERY 2 Sheets-Sheet 1 Filed May 6,1957 INVENTOR RICHARD W. PHELPS ATTO R NEYS Aug. 25, 1959 R. w. PHELPS2,901,191

PAPER MACHINERY Filed May 6, 1957 2 Sheets-Sheet 2 FIG-4 INVENTORRICHARD W. PHELPS W, aw, MM

ATTORNEYS 2,901,191 Patented Aug. 25, 1959 2,901,191 PAPER MACHINERYRichard W. Phelps, Fulton, N.Y., assiguor to The Black- Clawson Company,Hamilton, Ohio, a corporation of Ohio Application May 6, 1957, SerialNo. 657,274 6 Claims. (Cl. 242-66) This invention relates to windingapparatus for web materials.

The invention has particular relation to Winders employing a rider rollwhich is in constant engagement with an upper portion of the roll duringwinding and which therefore travels upwardly as the web materialaccumulates on the new roll with resulting increase inits diameter. Thisrider roll is commonlydriven at a surface speed slightly in excess ofthat of the winding roll, and thus with continuous creep therebetween,to assure maintained tightness of winding. However, this action of therider roll is most important during the start of each new roll on a coreor mandrel and the subsequent early stages of its winding, and it is ofdecreasing importance as the new roll builds up in diameter.

It is a primary object of the present invention to provide a simple andeffective rider roll assembly for a winder as outlined above in which asthe diameter of the new roll increases, the friction between the riderroll and the Web is caused to decrease by means of a control responsiveto the extent of upward movement of the rider roll by the accumulatedweb material on the new roll.

Another object of the invention is to provide such a rider roll assemblyin which the driving and loading relation of the rider roll and the newroll is caused to decrease as the diameter of the new roll increases bymeans of controlled creep between the rider roll and its associateddrive mechanism as the rider roll assembly is raised along the Winderframe by the accumulated web material on the new roll.

An additional object of the invention is to provide a rider rollassembly as outlined above in which the rider roll is driven by a drivebelt running at a constant speed slightly in excess of that of thewinding roll and in whichthe driving and loading relation of this beltto the rider roll is continuously decreased by reduction in the tensionin the belt in accordance with the vertical position of the rider rollassembly on the winder frame.

It is also an object of the invention to provide a rider roll assemblyhaving the above general characteristics in which the tension of thedriving belt for the rider roll is controlled by a fluid pressurecylinder and in wln'ch as the rider roll moves upwardly, the tensioningforce of the cylinder is continuously reduced by means of a controlmember on the rider roll carriage and a cooperating cam mounted on thewinder frame.

Additional objects and advantages of the invention will be apparent fromthe following description, the accompanying drawings and the appendedclaims.

In the drawings Fig. 1 is a view in side elevation showing a Winderincorporating a rider roll assembly in accordance with the invention;

Fig. 2 is a fragmentary front elevational view looking from right toleft in Fig. 1;

Fig. 3 is an enlarged side elevational view showing one end of the riderroll assembly of Figs. 1 and 2 and associated frame structure;

Fig. 4 is a front elevational view looking from right to left in Fig. 3;and

Fig. 5 is an enlarged fragmentary section taken on the line 55 of Fig.'1.

Referring to the drawings, which illustrate a preferred embodiment ofthe invention, the winder in Figs. 1 and 2 includes a main frameworkformed by top and bottom side frames 10-11 and 12-13 interconnected bysuitable crossbeams and tie rods 15 and 16. The drums 20 and 21 on whichthe new roll 22 is supported and driven are mounted on the bottom frames10 and 12 and driven in any suitable manner from a conventional drivesource, not shown. The web 25 is shown as guided to the frontwinder'drum by rolls 26 and 27 and it will be understood that slittingapparatus may be mounted in the usual manner in the bottom frames ifdesired.

The rider roll assembly includes a pair of carriages 30 and 31 mountedfor up and down sliding movement along ways 32 on the front of each ofthe upper side frames 11 and 13, and the rider roll 33 is journaled inbearings 34 depending from carriages 30 and 31. A counterweightingsystem for therider roll assembly includes a counterweight supported forguided movement in the upper side frames and connected to the carriages30 and 31 by chains 41 running over sprockets 42 and 43 on cross shafts44 and 45 respectively in the top of the side frames.

The movements of carriages 30 and 31 are coordinated to maintain therider roll 33 in accurate parallelism with the mandrel for the new roll22. Referring particularly to Fig. 2, a torque shaft 54 extends acrossthe full width of the winder and is journaled at opposite ends in thetwo carriages 30 and 31. This shaft 54 has secured thereon a pair ofpinions 55 each of which engages a rack 56 mounted on the adjacent upperside frame 11 or 13. The pinions 55 will therefore track at the samerotational speed along the racks 56 and thus force the two carriages totravel at the same rate.

The drive for the rider roll 33 is shown as duplicated at both sides ofthe winder. Referring to Fig. 1, the

a drive belt 60 on the control side of the winder is driven carriage 30.A tensioning pulley for belt 60 is carried by an arm 66 pivoted on theupper end of the side frame 11, as by means of the cross shaft 45. Thisdrive is shown in Fig. 2 as duplicated at the opposite side of thewinder by the parts 60'-66'.

In accordance with the invention, the supporting arm 66 for pulley 65 isoperated by a fluid pressure cylinder 70, such as an air cylinder,mounted on the side frame 11, the other arm 66' having a similaroperating cylinder 70, and the pressure supply to these cylinders iscontinuously varied as the rider roll assembly travels along ways 32.Referring particularly to Figs. 1 and 3, an air regulator 75, such as anadjustable reducing valve, is mounted on the carriage 30, as by means ofthe bracket 76 shown in Fig. 5, and is connected to the air supply line77. A line 78 leads from the outlet side of air regulator '75 to the twocylinders 70 and 70, and the air regulator includes a reciprocableplunger 80 which provides high pressure for maximum tension in belt 60when this plunger is at its innermost position and reduced pressure fordecreased belt tension as the plunger moves outwardly.

Provision is made for continuously changing the position of the plunger80 as the carriage 30 travels along the frame. Referring particularly toFig. l, a cam 81 is mounted on the side frame 11 by brackets 82 forengagement by a follower roller 85 mounted on the outer end of theplunger 80 by means of a yoke 86, and the forward edge of the cam 81 iscontoured with respect to the adjacent way 32 to cause continuouslycontrolled outward movement of plunger 80 as the carriage 30 moves fromits lowest to its highest position. Satisfactory results for practicalpurposes have been obtained by constructing cam 81 as a straight barinclined to diverge upwardly from the adjacent way 32 at a small angleof the-order of 1.

With this construction, when the rider roll assembly is at its lowestposition and the rider roll 33 is helping to cause the end of the web tostart winding on a new core, maximum pressure will be supplied to thecylinders 70 and 70' to rock the arms 66 and 66 in the direction movingpulleys 65 and 65' upwardly. This establishes a high tension in thedrive belts 60 and 60 for maximum driving of the rider roll 33 andminimum creep of the belts about the rider roll driven pulleys 62 and62, thus creating a maximum downward pull on the belts between thecarriages 30 and 31 and the respective drive pulleys 61 and 61 whichloads the rider roll onto the new roll to assure a firm and tight start.Then as the winding continues and the diameter of the new rollincreases, the rider roll assembly is pushed upwardly, and as thisoccurs, the air supply to the cylinders will be reduced to causecorresponding decrease in the belt tension. Since this result isindependent of roll size, the invention is equally applicable to rollsof any desired maximum diameter and axial length, and for all such casesit offers advantages of simplicity of construction, ease ofapplicability to existing winders, and assured economy and reliabilityof operation.

While the form of apparatus herein described constitutes a preferredembodiment of the invention, it is to be understood that the inventionis not limited to this precise form of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

1. In a winding machine for webmaterial including side frames and arider roll adapted to engage an upper portion of the new roll beingwound and to be moved upwardly by the accumulated web material on saidnew roll, the combination of carriage means for said rider roll, meanssupporting said carriage means for upward movement on said side framesalong a predetermined path,- friction drive means for driving said riderroll at a predetermined'greater surface'speed than said new roll,variable means for regulating said friction drive means to providevarying degrees of friction thereon and correspondingly variable creepbetween said rider roll and said new roll creating variable loading ofsaid rider roll on said new roll, and means responsive to the positionof said carriage means on said path for adjusting said variable means toprovide maximum driving and loading action for said rider roll when saidcarriage means is at its lowermost position on said path and decreasingsaid driving and loading action as said carriage means moves upwardlyalong said path.

2. In a winding machine for web material including side frames and arider roll adapted to engage an upper portion of the new roll beingwound and to be moved upwardly by the accumulated web material on saidnew roll, the combination of carriage means for said rider roll, meanssupporting said carriage means for upward movement on said said sideframes along a predetermined path, means including a drive belt fordriving said rider roll at a predetermined greater surface speed thansaid new roll, variable means for regulating the tension in said belt,and means responsive to the position of said carriage means on said pathfor adjusting said variable means to provide maximum tension in saidbelt when said carriage means is at its lowermost position on said pathand decreasing tension in said belt as said carriage means movesupwardly along said path.

3. In a Web winding machine for web material including side frames and arider roll adapted to engage an upper portion of the new roll beingwound and to be moved upwardly by the accumulated web material on saidnew roll, the combination of carriage means for said rider roll, meanssupporting said "carriage means for upward movement on said side framesalong a predetermined path, means including a drive helt for'drivingsaid rider roll at a predetermined greater surface speed than said newroll, variable means for regulating the tension in said belt, means onsaid carriage means including a moveable memher for adjusting saidvariable means, and an operating member on one of said side frames forengagement by said movable member during upward movement of saidcarriage means and cooperating therewith to provide maximum tension insaid belt when said carriage means is at its lowermost position on saidpath'and decreasing tension in said belt as said carriage means risesalong said path.

4. In a winding machine for web material including side frames and arider roll adapted to engage an upper portion of the new roll beingWound and to be moved upwardly by the accumulated web material on saidnew rollgthe combination of carriage means for said rider roll, meanssupporting said carriage means for upward movement on said side framesalong a predetermined path, means including a drive belt for drivingsaid rider roll at a predeterminedgreater surface speed than said newroll, fluid pressure means for regulating the tension in said belt, andmeans responsive to the position of said carriage means on said path foradjusting said fluid pressure means to provide maximum tension in saidbelt when said carriage means is at its lowermost position on said pathand decreasing tension in said belt as said carriage means movesupwardly along said path.

5. In a winding machine for web material including side frames and arider roll adapted to engage an upper portion of the new roll beingwound and to be moved upwardly by the accumulated web material on saidnew roll, the combination of carriage means for said rider roll, meanssupportingsaid carriage means for upward movement on said side framesalong a predetermined path, means including a drive belt for drivingsaid rider roll at a predetermined greater surface speed than said newroll, fluid pressure means for regulating the tension in said belt,means on said carriage means including a movable member for adjustingsaid fluid pressure means, and an operating member on one of said sideframes for engagement by said movable member during upward movement ofsaid carriage means and cooperating therewith to provide maximum tensionin said belt when said carriage means is at'its lowermost position onsaid path and decreasing tension in said belt as said carriage meansrises-along said path.

6. In a winding machine for web material including side frames and arider roll adapted to engage an upper portion of the new roll beingwound and to be moved upwardly by the accumulated web material on saidnew roll, the combination of carriage means for said rider roll, meanssupporting said carriagemeans for upward movement on said side framesalong a predetermined path, means including a drive belt for drivingsaid rider roll at a predetermined greater surface speed than said newroll, means including a fluid pressure cylinder on said side frames forregulating the tension in said belt, means including a movable member onsaid carriage means for adjusting said cylinder means, and a cam on oneof said frames for engagement by said movable member during upwardmovement of said carriage means and cooperating therewith to providemaximum tension in said belt when said carriage means is at itslowermost position on said path and decreasing tension in said belt assaid carriage means rises along said path.

References Cited in the file of this patent UNITED STATES PATENTS2,012,118 Cameron Aug. 20, 1935 2,270,043 Fournes's et al I an. 13, 19422,677,508 Locke May 4, 1954

